Finding the Fourth Proportional to 2,129,165.63, 2,930,790.68 and 1,856,752.91
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Solution
The fourth proportional to 2,129,165.63, 2,930,790.68 and 1,856,752.91 is: 2,555,815.31
Step by Step Solution
- Step 1: Write the proportion equation
2,129,165.63 : 2,930,790.68 = 1,856,752.91 : x - Step 2: Convert to fraction form
2,129,165.63/2,930,790.68 = 1,856,752.91/x - Step 3: Cross multiply
2,129,165.63x = 2,930,790.68 × 1,856,752.91 - Step 4: Simplify right side
2,129,165.63x = 5,441,754,099,753.16 - Step 5: Solve for x
x = 5,441,754,099,753.16/2,129,165.63 - Step 6: Final answer
x = 2,555,815.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.